Warp stop-motion for looms.



, .G. KOCH. WARP STOP MOTION FOR LOOMS. APPLVIOLTION FILED 001214, 1911.

Patented De. 10,1912;

amen WARP STOP MOTION FOR LOOMS.

APPLICATION FILED OOT.14, 1911.

. Patented Dec. 1, 1912.

{SHEETS-SHEET 2.

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' UNirEn snares PATENT OFFICE,

sno'nen KOCH; or snnnron, cons-"seamen nssrenos TOSIDN'EY BIiUll-IENTHAL & COMPANY, or NEW 1031;.- n. A COB'PORA'IIQN or NEW YORK.

- wan? s'roB-Mo'r-rcn son teens.

Specification of Letters Patent.

. Patented Dec, a;

Application filed October 14, 1911. Serial No. 654,700.

T5 all whom-it may concern:

Be it known that I, Geonen Keen, a sub ject of the Emperor of Germany, and residentof Shelton, in the county of Fairiield and State-of Connecticut,-have invented a new and useful Improvement in Harp Stop-Motions'for Looms, of which the following is a specification. I

Myinvention relates to a warp Stop motion for looms, with the object in View of providing effective means for stopping the action of the loom when for any cause a warp thread breaks.

My present invention is illustrated in connect-ion with what is known as the Tennarlo0m for weavin a double )ile fabric b but I do not wish to limit it to this particuf lar type of loom, as it may be successfully employed in connection with looms of various well known types. a In the accompanymg drawings, Figure 1 is a view in side elevation, partly in section,

' the same, Fig. 3 is an enlarged partial ver of so much of a loom as. will serve to show the practical application of my invention, ig. 2 is an enlarged partial plan view of ticalsection of the same, Fig. l is a similar view showingone of the boxes depressed and the position of the parts immediately affected thereby, Fig.6 is a partial plan view in detail'of the tripping mechanism, Fig. 6 is a view -of the same. in elevation partly in section, and Figs. 7, S and 9 illustrate in side elevation modified forms of the dogs for setting in operation the stop motion.

In an application filed byme August. 15,

1911, Serial No. 644199, entitled arp stop motions for looms, I showed, described and claimed mechanism for setting in' motion the stop motion by an electric current.

My presentinvention differs from the application above referred to in. that it. provides mechanical means for setting in operation the stop motion as distinguished from electrical 'means.

The loom frame is denoted by l, the gang of heddles by 2, the warp beams by 3 and 4, the lay beam by 5, the control lever by 13, the rocking leverfor effecting the stopping of the machine by 6*, the cam for operating said lever by 7 ,tlic hook on one arm. of aid lever by 8, and the rocking weft stop in by 9. These parts may be of any well. known or approved form, such, for example, as shown in the Tonnar Patent 13 716352,

. (1a: ed December 16 and carrying brackets 13, 14..

which carries the pulleys 24 and rods 32, 33, extending along within the boxes 19, 20

Uprights 10 and 11, fixed to a suitable horizontal support- 12 slot-I; 15, 1G in the shorter arms of the brackets. and 17, 18, in the longer arms. of the brackets, horiso zontal boxes 19, 20, extending between the brackets 13, 14, hangers "31, 221, connected to a band passing over the pulley 24: for

maintaining the proper tension upon the warp threads 25,26, the belt 2-? leading 5 "from a pulley 28 on the shaft- 29, :which rocks the heddles, to a pulley 30 suitably supported from the top frame ofi-the loom and: connected by a belt 31 with the shaft which provides a series of. dogs 34:, each piece being. mounted on the rod and free to swing thereon and each piece provided at itsupper end,. which projects slightly 5 through the top of the box, with an eye through which a warp thread leading over the top of the box passes; may all becom- ;structed, and arranged in a. manner-quite similar to that shown and described in my 30 pending application SG1']ll- No. 6%,199,

. hereinabove referred to.

My present invention is. directed particularly to the mechanism which mechanically coactswith the. dogs 34, referred to in my 35 fm-merapplication as Contact pieces, to effect the stopping. of the loom when a warp thread breaks.

Below the box 19 there is a skeleton frame consisting of horizontal arms 36, 37, projecting from uprights 38, 39, and connected by arod 410, which rod 40 lies in the pat-h'of. the lower ends of the dogs 34 when the latter are released from the warp'f' threads and. allowed to tilt into the position shown in F .ig. 3.

It is to be understood that there is a dog 34 for each of the warp threads and in the boX 19, Fig. 3, one of these is shown in its normal position suspended by a warp thread and another in its tilted position which it assumes when the warp threadbreaks, such tilting of the dog carrying its nose outwardly and vertically over the rod 40 so that the downward movement of the box will, when the lower end of the dog 34: has engaged .tve rod =10, carry the rod and the frameof "which it forms a part, downwardly.

The uprights 38, 39, are fixed to a rock engaged by thedogs in the box 19. The-rock shaft 41 has fixed to its outer ti S into' the-centralposition shown-in I Fig. 3.

'on e'of them beingisho'wnat 42,'which cor-- 5.- respond to the u'prights 38, 39,- and which" may be as aim'atter of construction, parts'of' the-same-piecesas 38,,39, fixed. tot-he rock ,shaf 41. These downwardlyprojecting" arts, one of' 'wliich is shown,at42, have 1:0 orizontal arms 43, 44, reaching out from their! to support a rod 45 in positioirto en-v gage the" tilted dogs inthe box in a man-. ner'quite similar tothat in which the rod 40 end a ,depending arm, in the ,present instance a skeleton arm of loop form denoted by 46, and to its lower ;end-.there"is' attached a cord 47 which'leads'througha guide eye. 48 'on'the' 201. standard. 10 and :thence to 'a'guide-eve- 49 ,to the pawl 50 and its weighted tube (the 'latterscorresponding to the pawl 52 and We ghted tubetEO: ofimsanhding application above referred to).

12'. i The; depending loop arm 46. has a laterally widened central, portion, the outer margins oiwhich engage shoulders 52, 53, on angle f shapedlink's 54,- 55, pivoted-td-the standard 10 a.t 56, 57. IThe lower. ends ofit-hese piv- '1j0 t ed links are connected by a coil spring- 58, which tends to draw them toward one-'-an'- fotlier 'into contact with'the opposite edges ;.'standard- 10, Which edgesioperate as to forajlimiting the inward-swing of the Whenthe arm 46 is tilted to one side,

' i wa;in Fig. 4, it will be ag n Spring pressure andlthe] ink, 54 under its spring I tension will tend tothrow the arm 46' back.

o'peration; when any one of "the warp- .tlireads'breaks and its dog 34 is allowed to' tiltso as ito'bring the ,lower end of the dog dfinto osition to. engage the rod 40 or the rod- 45, t e engagement with the rodw'illtilt l the' frame and rock shaft 41' thereby swinging' the arm 46 attached to the rock'shaft to '.the 'right'or topthe left and in whichever "of these tw'odireetions it," thes'aid arm, be

I50 tilted, it will draw thecord 47 through the e'ye48 and hence will pull down on the pawl 50, causing theL-Iatter to assume a, os1t10n .whereit will be engaged by the bee 8 and the cam-7 will thereupon operate the lcon'trol I 55 lever G-to throw the loom out Of'aCt-IOIfI.

orms 1 The Idog, 34 may 'assume yarious other thanithat shownin 1 to 4 inch-- Isi e; aspieg itgimn in Fig. 7; the 1 eye,-zd .qtqd -9,-ma be open;'for, as a show tin-IP19, -"ting-eye, denoted by 60,ma 6:0

bit-open and? alsoj'the' hole through whic the pivot rod 32 01-33 extends, may be open; 7

or,asshown in.Fig.- 9,' the eye may be closed aud t-he holelthrough which the rod 32 or 133 extends, be open as"s1 1ownat 6l. V 6 5 '7 That I claim is: w. v

1. In. a warp stop motion for looms, a swinging'dog, held. in 'position" by a warp. 4 thread, means for raising 'and'lowering the dog, a tilting frame'in'position to be oper 70 atedbythe-dogwhenthe'latteris'tilted out of normal position, a 'pring for returning the tiltingfframe to it normal position, a

loom stopping-mechanism "and a flexible.

connection between'the said tilting framejm nd! the loom fst pi n Sm fOrI ac I I mating the l u i 11 t-liloo'm'frame (see Fi 1), nd thncef I.

.2. In warp stop inotion' 'forf IQoms, a

plurality. of series'ofswinging dogs adapted',to be held normallyin poslt-ion warp,

threads, means for raising-and lowering the ried by-the arms in position to be engaged by any one of'the dogs ofv thedifl'erent se- 8 mos when tilted ;out of normal? position, a spring actuated arm; carried bythe rock shaft and arranged to swing againstspring tension in either oftwo'opposite directions;

.loom stopping'mecha'nism anda connection .90

between the saidt sprin'g actuated-"arm and the loom stopping mechanism for actuating thelatten: f, 1'

3. In' a.' Wa rp stop motion for looms,' a swinging dog adaptedrto be held normally in position awar'p thread, means'for raising and lowering the dogs, aztilting .frame in position tobe operated by-the dog when tiltedbut of n'orma'l..;position, a stop mechanism, a cam, a rocking arm provided witlf ahook for transmittingmotionfrom the cam to the stop mechanism, a gravity.

vpawl and aflexible connection betweenthe said tilting frame and the gravity pawl tor throwing the pawl into engagement with the -hook..

- In testimony, that I claim' the foregoing. as my invention, I have signed my name in presences of two witnesses, this 12th day of October, 1911.

GEORGE KOCH. Witnesses:-

.' FRITZ S'r'oL-znn'BERo, ,En'wnno W. KNEENi 

